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首页> 外文期刊>Journal of Zhejiang University. Science, A >Diagnosis of stator faults in induction motor based on zero sequence voltage after switch-off
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Diagnosis of stator faults in induction motor based on zero sequence voltage after switch-off

机译：基于零序电压的零序电动机诊断截止后的零序电动机故障

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摘要

To improve the accuracy of the stator winding fault diagnosis in induction motor, a new diagnostic method based on the hilbert-Huang transform (HHT) was proposed. The ratio of fundamental zero sequence voltage to positive sequence voltage after switch-off was selected as the stator fault characteristic, which could effectively avoid the influence of the supply unbalance and the load fluctuation, and directly represent the asymmetry in the stator. Using the empirical mode decomposition (EMD) based on HHT, the zero sequence voltage after switch-off was decomposed and the fundamental component was extracted. Then, the fault characteristic can be acquired. Experimental results on a 4-kW induction motor demonstrate the feasibility and effectiveness of this method.
机译：为了提高感应电动机定子绕组故障诊断的准确性，提出了一种基于希尔伯特 - 黄变换（HHT）的新诊断方法。选择关闭后的基本零序电压与正序电压的比率作为定子故障特性，这可以有效地避免供应不平衡和负载波动的影响，并且直接表示定子中的不对称性。使用基于HHT的经验模式分解（EMD），断开后的零序电压被分解，提取基本组分。然后，可以获得故障特性。 4-kW诱导电机上的实验结果证明了这种方法的可行性和有效性。

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